Grain and straw separator



(No Model.) 2 Sheets-Sheet 1. D. MURPHY.

GRAIN AND STRAW SEPARATOR.

No. 264,190. Patented Sept. 12, 1882.

N PETERS. Pholo-Lilhogmplwr. Washinglcm 0. c.

' 2 Sheets-Sheet 2.

(No Model) D.'MURPHY.

GRAIN AND STRAW SEPARATOR.

Patented Spt.12, 1882.

N. PETERS. Phmwmm m ben Washington, D. c. v

UNITED STATES PATENT OFFICE.

DANIEL MURPHY, E DUBU UE COUNTY, IOWA.

GRAIN AND STRAW SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 264,190, datedSeptember 12, 1882.

Application filed June 6, 1882.

To all whom it may concern Be it known that I, DANIEL MURPHY, a citizenof the United States, residing in the county of Dubuque and State ofIowa, have invented a new and Improved Grain and Straw Separator, ofwhich the following is a specification.

Myinvention will be clearly understood from the following descriptionand claims and annexed drawings In the accompanying drawings, Figure 1is a side elevation of my improved grain and straw separator; Fig. 2, avertical longitudinal section of the same in theline as m of Fig. 3 andFig. 3 is a vertical transverse section in the line 3 y of Figs. 1 and2, looking toward the front or lower end of the machine.

- Similar letters of reference in the several figures indicatecorresponding parts.

A in the drawings represents the frame, suitably boarded up on itssides, as at a, so as to prevent the straw and grain from falling offthe shaker-bars.

B B are two shaker-frames, upon which shaker-bars O O are rigidlyapplied. The lower cross-bars, b b, of the frames B B are fitted toreciprocate in slightly-inclined side grooves, c, of the boarding a,while the upper cross-bars, 1) b and the intermediate crossbars, b If,are respectively connected to laterally-extended arms 01 of straps D Dand D 1) of eccentrics E E and E E which eccentrics and straps aresupported upon a transyerse driving-shaft, G, as shown. The respectivepairs of eccentrics are rigidly fastened upon the shaft G, so as tovibrate the respective frames B B, the eccentrics E E moving the frame Bupward, while the eccentrics E E move the frame B downward, and viceversa, as the shaft continues its revolution, and during these upwardand downwardmovements the frames are also moved longitudinally back andforth. I

The shaker-bars O O are connected to the bars I) b b b by inclinedstandards ff. In making the shaker-bars, boards 9 g may be employed, andthese boards may be fastened to the standardsff by nailing the boards tothe sides of the standards, and in connecting the shaker-bars C to thecross-bar b a solid end piece, f may be nailed to said bar I), and

(No model.)

its upper end placed between the boards 9 g, and said boards may then benailed to the same, while with the bars 0 they can be nailed directly tothe cross-barb.

The upper edges of the respective pairs of boards 9 g may he formed withinclined steps h h, and upon these inclined steps may be applied platesm m, so as to connect the two side boards of each shaker-bar, and s asto form a stepped surface similar to that of a straightedged saw, asshown. The plates are .very thin, being only about half as thick as thedepth of the steps h 11/, and consequently passages n a for grain topass through are formed between the respective pairs of plates m m. Thepassages n 11/ lead into and through the hollow shaker-bars (J G. Theseveral shakerbars, of which there may he, say, twenty, are placed closeto each other and form a closed shaker-bed between the boarding a, of,say, forty-two or forty-eight inches in width by ten or twelve feet inlength, except that the passages n n are provided for the escape ofgrain as it is shaken from the straw. Any other suitable construction ofshaker-bar than the one described may be adopted.

The straw is lifted and violently agitated up and down, and also movedalong by the serrated or stepped surfaces of the bars as said bars arevibrated up and down and reciprocated longitudinally, and it finallypasses over the highest end ofthe machine, while the grain passesthrough the passages n a into proper receivers. Y

The eccentric-straps, by having lateral extensions, afford a verysubstantial support for the frames of the shaker-bars at each side ofthe machine, and the driving-shaft, by having the eccentrics on its endsat each side of the machine, produces a very regular and effectivealternate up and down and back and forward movement of the shaker-bars,and thus liability of bind, as well as much unnecessaryjarring andwearof themachine, will be avoided; the eccentrics and their straps,being outside the boarding of the machine,will be out of the way of thefalling grain as well as the straw, which latter would be liable to wraparound crank-bends of shafts if inside the machine, and thereby clog it.I

The grain and straw shakers heretofore de- 2 scarce I vised have beenprovidedwith cranked shafts, easy of access and can be oiled while themawhich are inside the machine and directly under the shaker-bars, andwhen such cranked shafts are employed it is hardly possible to use morethan four shaker-bars, which are not sutticient, from the fact that in amachine .of, say, forty-two or forty-eight inches in width, (the usualsize,) the bars will have to be from ten to twelve inches in width, andwith bars of such width in thrashingbrittle straw,which will cut upshort, the straw will lie on a portion of the bars and not be caught byadjoining ones and carried back, thus causing the machine to choke up,whereas with my machine, having the eccentrics and straps outside, it ispossible to use as many as twenty narrow carrying-bars in a machine ofordinary size, and thus a most perfect means for eifecting a separationof. the grain and carrying back of the straw is provided. Further, in mymachine there are no shaft hearings or boxes on the inside to catch andwind up the straw, which is certain to work down between theshaker-bars. W'here cranks have been used they have proved objectionableon account of the straw either winding upon and breaking them or gettingon fire from friction and causing; serious damage. Besides this, thebearings of my machine being outside, they are chine is in motion-athing impossible with bearings inside of the machine.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In combination with the driving-shaft, outside eccentrics, andshaker-bars of a grain and straw separator, the outside eccentricstrapsprovided with laterally-extending arms and the frame-pieces, by whichsaid bars are connected to said arms and supported while they are beingvibrated up and down and moved back and forth by the eccentrics andthedriving-shat't, substantially as described.

2. The combination of the machine-frame, two pairs of eccentric-strapson the outside of the machine-frame and provided with laterallyextendingarms, two pairs of eccentrics also placed outside the machine-frame andone pair having their throw opposed to the other, a revolvingdriving-shaft, transverse connectin g-bars, standards, and longitudinalshaking-- bars, substantially as and for the purpose described.

DANLEL MURPHY.

Witnesses:

TIMOTHY G. MURPHY, LAWRENCE M. MoLoNnY.

